. >> national security teams including director muller, attorney general holder, secretary napolitano and homeland security adviser on the attacks in boston. we continue to mobilize and deploy all resources to protect our citizens and investigate and to respond to this attack. obviously our first thoughts this morning are with the victims, their families, and the city of boston. we know that two explosions gravely wounded dozens of americans and took the lives of others including an 8-year-old boy. this was a heinous and cowardly act. given what we now know about what took fbi is investigating it as an act of terrorism. anytime bombs are used to target civilian, it is an act of terrorism. what we don't yet know, however, is who carried out the attack or why, whether it was planned and executed by a terrorist organization, foreign or domestic, or was the act an individual. clearly we're at the beginning of our investigation. it will take time to follow every lead and determine what happened. but we will find out. we will find whoever harmed our citizens and we will bring them to justic